1	Conidiophores in synnematous fascicles, synnemata up to 250 µm high, mostly 20–40 µm wide. On Phaseolus	Ps. griseola
–	Conidiophores solitary, fasciculate or in sporodochia	2
2	Stromata well-developed	3
–	Stromata lacking or very small	4
3	Leaf spots often lacking or indistinct, conidiophores often narrower towards the tips, mostly 20–92 μm long, conidia, mostly 22–55 μm long, constricted at the septa. On Senna	Ps. sennicola
–	Leaf spots evident, conidiophores, mostly 14–40 μm long, conidia mostly 24–82 μm long. On Vigna	Ps. tabei
4	Caespituli amphigenous, conidiophores mostly 15–54 μm long, conidia mostly 42–132 μm long. On Phaseolus, Vigna	Ps. cruenta
–	Caespituli mainly epiphyllous, conidiophores mostly 13–44 μm long, conidia mostly 38–110 μm long. On Centrosema	Ps. bradburyae